Kit for fastening a panel, provided with a holding part and a clamping element, and holding part and clamping element of the fastening kit

An attachment kit, which comprises:

• a retaining part, preformed and one-piece, the retaining part comprising:
• a main part extending along an elongation axis A, the main part including a first side wall, the first side wall having a first inner face and a first outer face as well as a first upper edge parallel to the elongation axis A and opposite a rear face of the main part;
• the main part further including two transverse walls, perpendicular to the elongation axis and delimiting a passage open through the rear face for the insertion of a clamping element of the attachment kit;
• the transverse walls including a retaining edge defining a retaining plane, opposite the rear face, and against which the clamping element inserted through the rear face is configured to exert a force in a direction of the rear face;
• and
• a first lateral wing laterally extending the main part from the first upper edge, the first lateral wing being intended to bear by a bearing surface against a working face of the panel opposite the contact face of the panel;
• and
• a one-piece clamping element configured to cooperate with the retaining part for clamping a panel by its contact face against a U-section rail, the clamping element comprising two uprights mechanically secured to one another and which extend, in a plane P, each from their first end toward their second end in two divergent directions;
• the first ends comprising first anchoring means arranged to allow the clamping element to be attached to the rail by snap-fastening, the second ends comprising second anchoring means intended to cooperate with one of the retaining edges when the two uprights are inserted into the passage through the rear face.